Redmi Note 7 was introduced just two days ago, but the official announcement missed to mention an important feature - the ports and buttons have watertight seals. Xiaomi's CEO, Lei Jun, took the time to boast about the phone's build quality on Weibo. He says that the engineering team put a lot of effort to design watertight seals for all the weak points of the handset - the SIM card tray, USB-C port, 3.5mm audio jack, the buttons and you can even find some around the camera module. Moreover, there's a membrane on the loudspeaker as well. Despite the low price tag of the handset, Lei...